PSLE Penelope had a rectangular piece of paper, 56.1 cm by 30 cm. She cut out as many squares as possible from the paper. The side of each square was 3 cm.
- How many squares did Penelope cut out?
- What area of the paper was left?
(a)
Number of squares that can be cut out lengthwise
= 56.1 ÷ 3
= 18 r 2.1
Number of squares that can be cut out breadthwise
= 30 ÷ 3
= 10 r 0
Total number of squares
= 10 x 18
= 180
(b)
Remaining length of the paper left = 2.1 cm
Area of the paper left
= 2.1 x 30
= 63 cm
2 Answer(s): (a) 180; (b) 63 cm
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